| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 40 |
3.4%
|
|
| 2012 | 278 |
23.7%
|
|
| 2013 | 488 |
41.7%
|
|
| 2014 | 236 |
20.2%
|
|
| 2015 | 74 |
6.3%
|
|
| 2016 | 26 |
2.2%
|
|
| 2017 | 29 |
2.5%
|